P11 corner lights

Ok i just bought strobe lights for my car, and I cant take out the headlight housing so I can take that orange crap out and drill my holes. I got the 2 bolts on top out and it doesnt wanna come loose what am I missing, any tips thanx.

Theres one bolt (10mm I think) on the back of the lights on either side of the radiator. If facing the engine the left hand one is a bitch to get out, but once you get them off, simply pull the headlamp assmebly striaght out. It takes some effort since there is a press fitting that still holds the light in but it will come out. Hope that helps.